A switching method of an antenna array, a UWB radar system and related devices

Abstract

Embodiments of the present application provide a kind of switching method of antenna array, UWB radar system and related equipment, for completing the switching operation of antenna array.It includes: when UWB radar chip triggers antenna switching instruction, antenna switching instruction is sent to signal control module, to make signal control module generate antenna switching control signal according to antenna switching instruction;Control signal control module transmits antenna switching control signal to delay control module, to make delay control module generate delay control parameter according to antenna switching control signal;Control delay control module transmits delay control parameter to target switch module, to make target switch module generate antenna selection signal according to the switch state corresponding to delay control parameter;Control target switch module sends antenna selection signal to target antenna array, to make target antenna array select target antenna unit according to antenna selection signal, to complete the switching operation between different antenna array.

Description

Technical Field

[0001] This application relates to the field of radar technology, and in particular to an antenna array switching method, a UWB radar system and related equipment. Background Technology

[0002] Currently, most ultrawideband (UWB) chips are 1T1R (1 transmit, 1 receive) or 1T2R (1 transmit, 2 receive) chips, unlike millimeter-wave (mmW) chips which support multiple T (transmit) and multiple R (receive), such as 2T4R or 2T6R. Therefore, in UWB radar systems, the switching of antenna arrays plays a crucial role in optimizing system performance in order to achieve high resolution and better radar angle coverage.

[0003] However, in the existing technology, antenna switching devices usually rely on mechanical or simple logic circuit-based control methods, which are slow and inflexible, making it difficult to meet the needs of high-performance UWB radar. Summary of the Invention

[0004] This application provides an antenna array switching method, a UWB radar system, and related equipment for completing antenna array switching operations.

[0005] The first aspect of this application provides an antenna array switching method applied to an ultra-wideband (UWB) radar system. The UWB radar system includes a circuit-connected UWB radar chip, a signal control module, a delay control module, at least two switching modules, and at least two antenna arrays corresponding to the switching modules, comprising:

[0006] When the UWB radar chip triggers an antenna switching command, it sends the antenna switching command to the signal control module, so that the signal control module generates an antenna switching control signal according to the antenna switching command.

[0007] The signal control module transmits the antenna switching control signal to the delay control module, so that the delay control module generates delay control parameters based on the antenna switching control signal; wherein, the delay control parameters are used to control the switching state of the target switching module, and the target switching module is at least one of all switching modules;

[0008] The delay control module is controlled to transmit the delay control parameters to the target switch module, so that the target switch module generates an antenna selection signal according to the switch state corresponding to the delay control parameters;

[0009] The target switch module is controlled to send the antenna selection signal to the target antenna array, so that the target antenna array selects the target antenna element according to the antenna selection signal to complete the switching operation between different antenna arrays; wherein, the target antenna array is an antenna array that is electrically connected to any switch module, and the antenna array includes multiple antenna elements.

[0010] Optionally, before sending the antenna switching command to the signal control module, the method further includes:

[0011] The UWB radar chip and all switching modules are connected based on radio frequency signals; wherein, the radio frequency signals include radio frequency transmission signals and radio frequency reception signals, and the interval between the radio frequency transmission signals and the radio frequency reception signals is one antenna switching cycle;

[0012] When the UWB radar chip triggers the array selection command, and the array selection command is triggered after the antenna switching cycle, the antenna switching command is received and sent to the UWB radar chip.

[0013] Optionally, the method further includes:

[0014] Determine the received signal processing time in the UWB radar chip corresponding to the radio frequency received signal;

[0015] Set the burst count value for the antenna burst and determine the antenna processing time of the UWB radar chip corresponding to the burst count; wherein, the antenna processing time includes the frame interval of the radar frame and the burst delay value, the burst count value is related to the antenna elements of the antenna array, and the time interval of any antenna burst is the burst delay value.

[0016] The antenna switching cycle is determined based on the received signal processing time and the antenna processing time.

[0017] Optionally, the UWB radar system is circuitically connected to the power supply module and the crystal oscillator module. Before sending the antenna switching command to the signal control module, the method further includes:

[0018] Receive time calibration commands sent by the power module and the crystal oscillator module;

[0019] The time calibration command controls the UWB radar chip to trigger a time synchronization signal, thereby controlling the UWB radar chip, the signal control module, the delay control module, and the switch module to synchronize their times according to the time synchronization signal.

[0020] Optionally, if the switching module includes a first switching module and a second switching module, the antenna array includes a first group of antenna arrays corresponding to the first switching module and a second group of antenna arrays corresponding to the second switching module, wherein each group of antenna arrays includes at least a first antenna element, a second antenna element, and a third antenna element, and the step of generating an antenna selection signal based on the switching state corresponding to the delay control parameter includes:

[0021] The decoding parameter code for setting the delay control parameters; wherein, the high two bits of the decoding parameter code are used to represent the selection parameter code corresponding to the first switch module or the second switch module, and the low two bits of the decoding parameter code are used to represent the control parameter code corresponding to the first antenna unit, the second antenna unit or the third antenna unit;

[0022] The delay control module selects the target switch module according to the decoding parameter code; wherein, the target switch module is the selection parameter code corresponding to the two highest bits of the decoding parameter code;

[0023] The delay control module selects the target antenna unit according to the decoding parameter code; wherein the target antenna unit is the control parameter code corresponding to the lower two bits of the decoding parameter code;

[0024] The switching state of the target switch module is determined according to the selection parameter code; the antenna selection signal corresponding to the switching state is determined according to the control parameter code.

[0025] Optionally, the serial output port of the delay control module includes a first serial output port to an eighth serial output port, and the switching module includes a first control pin and a second control pin, wherein the first control pin and the second control pin are associated with the antenna selection signal;

[0026] If the target antenna unit is a horizontal antenna unit, the output level of the first serial output port of the delay control module is set to a high level, and the output level of the other serial output ports is set to a low level; the switch state corresponding to the first control pin in the switch module is activated; wherein, the antenna selection signal is to select the first antenna unit and the second antenna unit of any switch module;

[0027] If the target antenna unit is a vertical antenna unit, set the output level of the second serial output port of the delay control module to a high level, and the output level of the other serial output ports to a low level; activate the switch state corresponding to the second control pin in the switch module; wherein, the antenna selection signal is to select the second antenna unit and the third antenna unit of any switch module.

[0028] Optionally,

[0029] If the target antenna element is all the antenna elements in at least two antenna arrays, set the output levels of the first serial output port, second serial output port, third serial output port, and fourth serial output port of the delay control module to high level, and the output levels of the remaining serial output ports to low level; activate the switch states of all the switch modules corresponding to the first control pin and the second control pin; wherein, the first serial output port and the second serial output port correspond to the first antenna array, and the third serial output port and the fourth serial output port correspond to the second antenna array;

[0030] If the UWB radar system further includes a third antenna array, and the target antenna element is all the antenna elements in at least three antenna arrays, the output levels of the first, second, third, fourth, fifth, and sixth serial output ports of the delay control module are set to high level, and the output levels of the remaining serial output ports are set to low level; the switching states corresponding to the first and second control pins in all the switching modules are activated; wherein, the first and second serial output ports correspond to the first antenna array, the third and fourth serial output ports correspond to the second antenna array, and the fifth and sixth serial output ports correspond to the third antenna array.

[0031] The second aspect of this application provides an ultra-wideband UWB radar system, including: a UWB radar chip, a signal control module, a delay control module, at least two switch modules, and at least two antenna arrays respectively corresponding to the switch modules;

[0032] The output terminal of the UWB radar chip is connected to the input terminal of the signal control module, and is used to trigger an antenna switching command and send the antenna switching command to the signal control module; wherein, the antenna switching command is used to switch any antenna array;

[0033] The output terminal of the signal control module is connected to the input terminal of the delay control module, and is used to generate an antenna switching control signal according to the antenna switching command, and transmit the antenna switching control signal to the delay control module.

[0034] The output of the delay control module is connected to the input of at least two switch modules, and is used to generate delay control parameters according to the antenna switching command, and transmit the delay control parameters to the target switch module; wherein, the delay control parameters are used to control the switching state of the target switch module, and the target switch module is at least one of all switch modules;

[0035] The output terminal of the switch module is connected to the corresponding antenna array, and is used to generate an antenna selection signal according to the switch state corresponding to the delay control parameter, and send the antenna selection signal to the corresponding antenna array;

[0036] The antenna array includes multiple antenna elements, which are used to activate the corresponding antenna elements according to the antenna selection signal.

[0037] The ultra-wideband UWB radar system provided in the second aspect of this application is used to perform the antenna array switching method described in the first aspect.

[0038] A third aspect of this application provides an antenna array switching device, comprising:

[0039] Central processing unit, memory, input / output interfaces, wired or wireless network interfaces, and power supply;

[0040] The memory is either a short-term storage memory or a persistent storage memory;

[0041] The central processing unit is configured to communicate with the memory and execute instructions in the memory to perform the antenna array switching method described in the first aspect.

[0042] A fourth aspect of this application provides a computer-readable storage medium including instructions that, when executed on a computer, cause the computer to perform the antenna array switching method described in the first aspect.

[0043] A fifth aspect of this application provides a computer program product, the computer program product including instructions that, when executed on a computer, cause the computer to perform the antenna array switching method described in the first aspect.

[0044] As can be seen from the above technical solutions, the embodiments of this application have the following advantages: Through the antenna array switching method disclosed in the embodiments of this application, when the UWB radar chip triggers an antenna switching command, it first sends an antenna switching command to the signal control module, so that the signal control module generates an antenna switching control signal according to the antenna switching command; then, it controls the signal control module to transmit the antenna switching control signal to the delay control module, so that the delay control module generates delay control parameters according to the antenna switching control signal; wherein, the delay control parameters are used to control the switching state of the target switching module, and the target switching module is at least one of all switching modules; then, it controls the delay control module to transmit the delay control parameters to the target switching module, so that the target switching module generates an antenna selection signal according to the switching state corresponding to the delay control parameters; finally, it controls the target switching module to send the antenna selection signal to the target antenna array, so that the target antenna array selects the target antenna element according to the antenna selection signal to complete the switching operation between different antenna arrays; wherein, the target antenna array is an antenna array that has a circuit connection with any switching module, and the antenna array includes multiple antenna elements. Therefore, by transmitting the antenna switching control signal, the switching switch, under the coordination of the delay control module, can achieve fast and flexible antenna switching, thereby improving the performance of the UWB radar system. Attached Figure Description

[0045] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments recorded in this application. For those skilled in the art, other drawings can be obtained based on these drawings.

[0046] Figure 1 This is a schematic diagram of the system composition of a UWB radar system disclosed in an embodiment of this application;

[0047] Figure 2 This is a schematic diagram of the connection method of a UWB radar system disclosed in an embodiment of this application;

[0048] Figure 3 This is a flowchart illustrating an antenna array switching method disclosed in an embodiment of this application;

[0049] Figure 4 This is a flowchart illustrating another antenna array switching method disclosed in an embodiment of this application;

[0050] Figure 5 This is a radar frame timing diagram of a UWB radar chip disclosed in an embodiment of this application;

[0051] Figure 6This is a schematic diagram of the structure of an antenna array switching device disclosed in an embodiment of this application. Detailed Implementation

[0052] The terms “first,” “second,” “third,” “fourth,” etc. (if present) in the specification, claims, and accompanying drawings of this application are used to distinguish similar objects and are not necessarily used to describe a particular order or sequence. It should be understood that such data can be interchanged where appropriate so that the embodiments described herein can be implemented in a sequence other than that illustrated or described herein. Furthermore, the terms “comprising” and “having,” and any variations thereof, are intended to cover a non-exclusive inclusion; for example, a process, method, system, product, or apparatus that comprises a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to such processes, methods, products, or apparatus.

[0053] It should be noted that the use of terms such as "first" and "second" in this application is for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include at least one of those features. Furthermore, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. If the combination of technical solutions is contradictory or impossible to implement, such a combination of technical solutions should be considered non-existent and not within the scope of protection claimed in this application.

[0054] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0055] For easier resolution of the technical issues described above, please refer to [link / reference]. Figure 1 , Figure 1 This is a schematic diagram of the system composition of a UWB radar system disclosed in an embodiment of this application. It consists of... Figure 1As can be seen, a UWB radar system includes at least a UWB chip, a complex programmable logic device (CPLD) control module, a delay control unit, an antenna switching matrix, a UWB radar array antenna, and a power supply module and an external crystal oscillator. It is easy to understand that the UWB chip is the same as the UWB radar chip described above, the CPLD control module is the same as the signal control module described above, the delay control unit is the same as the delay control module described above, the antenna switching matrix (including the switch control unit) is the same as the switch module described above, and the UWB radar array antenna is the same as the antenna array described above. For ease of understanding and description, these will not be elaborated upon further. Furthermore, the CPLD control module (signal control module) can be model XC2C64A, the delay control unit (delay control module) can be model 74HC595, the antenna switching matrix can be model SKY13317, and the UWB radar chip can be model NCJ29D6. It is easy to understand that the models described above are only one of the possible product models for implementing this technical solution, and specific limitations and details are not provided here.

[0056] Depend on Figure 1 As shown, the UWB radar chip includes a transmitter (TX) and a receiver (RX) for the radio frequency path, as well as an input (SYNC_IN) and an output (SYNC_OUT) for the synchronization signal. TX and RX are connected to the radio frequency switch RF (located on the switch module). SYNC is used to trigger the synchronization signal transmitted between the power supply module and the external crystal oscillator. Thus, after receiving the synchronization signal and achieving time synchronization of all circuit components in the UWB radar system, it can receive external UWB control signals, thereby enabling antenna switching.

[0057] It is easy to understand that the external control signals received by the UWB include at least an array selection signal and a switching trigger signal. The array selection signal selects the corresponding antenna array, and the switching trigger signal switches the corresponding antenna array. Therefore, the UWB radar chip transmits the corresponding array selection signal or switching trigger signal to the CPLD control module. The CPLD control module then generates control logic based on the corresponding signal and transmits it to the delay control unit. The delay control unit generates delay control logic based on this control logic (the delay parameters can be controlled via an external crystal oscillator) and transmits this delay control logic to the corresponding antenna switching switch matrix. Thus, the antenna switching switch matrix controls the relevant switch control units to achieve the selection and switching of the radar array antennas.

[0058] In simple terms, this UWB radar system includes a circuit-connected UWB radar chip, a signal control module, a delay control module, at least two switch modules, and at least two antenna arrays corresponding to the switch modules. Specifically, the output of the UWB radar chip is connected to the input of the signal control module to trigger an antenna switching command and send the command to the signal control module; the antenna switching command is used to switch any antenna array. The output of the signal control module is connected to the input of the delay control module to generate an antenna switching control signal based on the antenna switching command and transmit it to the delay control module. The output of the delay control module is connected to the input of at least two switch modules to generate delay control parameters based on the antenna switching command and transmit them to the target switch module; the delay control parameters are used to control the switching state of the target switch module, which is at least one of all switch modules. The output of each switch module is connected to its corresponding antenna array to generate an antenna selection signal based on the switching state corresponding to the delay control parameters and send it to the corresponding antenna array. The antenna array includes multiple antenna elements, used to activate the corresponding antenna element based on the antenna selection signal.

[0059] Therefore, through Figure 1 The UWB radar system shown is an array antenna switching device for a UWB radar system based on CPLD switching control, which can achieve fast and flexible antenna switching to improve the performance of the UWB radar system.

[0060] Furthermore, in order to achieve Figure 1 For the operating logic of the UWB radar system shown, please refer to [link / reference]. Figure 2 , Figure 2 This is a schematic diagram of the connection method of a UWB radar system disclosed in an embodiment of this application.

[0061] Depend on Figure 2 As can be seen, the UWB radar chip's SYNC_OUT1 and SYNC_OUT2 are connected to the CPLD control module (signal control module), the RX interface is connected to the RF interface of the upper switch module (specifically a high-frequency switch), and the TX interface is connected to the lower switch module. It's easy to understand that SYNC_IN / OUT are two usable interrupt pins, which can be used as SYNC_OUT1 and SYNC_OUT2 respectively to notify the CPLD to initiate antenna switching. Therefore, combined with... Figure 1 As shown, the synchronization signal is the SYN_IN / OUT pin, which is pulled down before the radar frame begins, interrupting the CPLD. Furthermore, although the pin is called SYNC_IN / OUT, it can also be used as the OUTPUT pin.

[0062] The various control signals generated by the CPLD control module can be transmitted to the lower switching module or the delay control module. Specifically, this can be achieved through digital signals (DS), latching pulse signals (STCP, storage register clock input), or shift pulse signals (SHCP, shift register clock input). It's easy to understand that the CPLD control module can also be considered a decoder. Therefore, the control signals transmitted by the UWB radar chip are intended for the CPLD. After an interrupt is reported to the CPLD, the decoder and switching module are controlled according to the CPLD programming.

[0063] The delay control module determines the corresponding delay control logic through various signals transmitted by the CPLD control module, and then controls the high and low levels of the different PINs of Q0-Q7 to control the high-frequency switches (V1, V2).

[0064] The switching module can select its radio frequency path (RF1, RF2, and RF3) according to the corresponding delay control logic (including the control logic output by the decoder or the interrupt signal transmitted by the corresponding UWB radar chip, etc.), and thereby turn on or select the antenna elements in the antenna array (e.g., RX11, RX12, and RX13 in antenna array 1) through the corresponding radio frequency signals.

[0065] Therefore, through Figure 1 and Figure 2 This allows us to understand the operating modes of each circuit component in the UWB radar system. The CPLD control module uses a CPLD as its core control unit. The CPLD receives control signals from the radar system (such as array selection signals and switching trigger signals) and generates corresponding antenna switching control signals through internal logic. CPLD programming allows for flexible antenna switching strategies, such as polling switching and on-demand switching. The antenna switching matrix (antenna arrays 1 and 2) consists of multiple high-frequency switches, each controlling the connection or disconnection of a group of antennas. The high-frequency switches use low insertion loss and high isolation RF switches to ensure signal transmission quality. The delay control unit uses a programmable delay circuit to ensure signal transmission stability during antenna switching. The parameters of the delay control unit can be adjusted according to specific application requirements. Operating principle: The radar system issues an antenna switching command, which is transmitted to the CPLD control module. The CPLD control module generates corresponding antenna switching control signals based on the command. These signals are transmitted to the antenna switching matrix, and the switching switches, coordinated by the delay control unit, complete the antenna switching operation.

[0066] For the convenience of understanding the above Figure 1 and Figure 2For a detailed description of the system composition and circuit connections of the UWB radar system shown, please refer to [link / reference]. Figure 3 , Figure 3 This is a flowchart illustrating an antenna array switching method disclosed in an embodiment of this application. It includes steps 301-304.

[0067] 301. When the UWB radar chip triggers the antenna switching command, it sends the antenna switching command to the signal control module so that the signal control module can generate an antenna switching control signal according to the antenna switching command.

[0068] Combination Figure 1 and Figure 2 As shown, when the UWB radar chip triggers an antenna switching command, it can send the antenna switching command to the signal control module, thereby enabling the signal control module to generate an antenna switching control signal based on the antenna switching command.

[0069] In one specific embodiment, when the UWB radar chip receives an externally transmitted control signal, it can trigger an antenna switching command. The UWB radar chip in the UWB radar system can then execute the corresponding control logic based on this antenna switching command. Specifically, the UWB radar chip can send an antenna switching command to the signal control module via SYNC_OUT. The signal control module can then generate an antenna switching control signal based on this command.

[0070] Furthermore, the signal control module can also parse the antenna switching command to extract the array selection signal or switching trigger signal transmitted by the UWB radar system. The array selection signal and switching trigger signal will be described in detail later. However, in this embodiment, the signal control module can generate the corresponding antenna switching control signal through internal logic.

[0071] 302. The control signal control module transmits the antenna switching control signal to the delay control module, so that the delay control module generates delay control parameters based on the antenna switching control signal.

[0072] Therefore, based on step 301, the UWB radar system can control the signal control module to transmit the antenna switching control signal to the delay control module, thereby enabling the delay control module to generate delay control parameters according to the antenna switching control signal. It is easy to understand that the delay control parameters are used to control the switching state of the target switching module, which is at least one of all switching modules.

[0073] In one specific embodiment, the signal control module uses, for example... Figure 2The signal transmission methods shown (DS, SHCP, or STCP) transmit the antenna switching control signal to the delay control module. This antenna switching control signal can be understood as a control logic, specifically the control logic for the switching module and the antenna array. The delay control module can then generate delay control parameters based on this control logic. It's easy to understand that since the control logic is for the switching module and its corresponding antenna array, the delay control parameters also correspond to the switching module. Specifically, the delay control parameters correspond to the switching state of the target switching module, which is the switching module that needs to be controlled in the control logic.

[0074] 303. The delay control module transmits the delay control parameters to the target switch module, so that the target switch module generates an antenna selection signal according to the switch state corresponding to the delay control parameters.

[0075] Based on step 302, the UWB radar system can control the delay control module to transmit the delay control parameters to the target switch module, thereby enabling the target switch module to generate an antenna selection signal according to the switch state corresponding to the delay control parameters.

[0076] In one specific embodiment, the delay control module compiles the antenna switching control signal to generate delay control parameters. Based on this, the delay control module can execute the corresponding delay control parameters according to the programmable delay circuit, thereby transmitting the relevant delay control parameters to the corresponding switching module, i.e., the target switching module. It should be noted that the control parameters of the delay control module can be adjusted according to specific applications and requirements; no specific limitations are imposed here. Therefore, the target switching module can generate an antenna selection signal based on the switching state of the switching module set in the delay control parameters.

[0077] 304. The target switch module sends the antenna selection signal to the target antenna array so that the target antenna array selects the target antenna element according to the antenna selection signal, thereby completing the switching operation between different antenna arrays.

[0078] Based on step 303, the UWB radar system can control the target switching module to send an antenna selection signal to the target antenna array, thereby enabling the target antenna array to select a target antenna element based on the antenna selection signal, and thus completing the switching operation between different antenna arrays. It is easy to understand that the target antenna array is an antenna array that is electrically connected to any of the switching modules, and the antenna array includes multiple antenna elements.

[0079] In one specific embodiment, the target switching module can transmit an antenna selection signal via radio frequency circuitry to the antenna array corresponding to itself, i.e., the target antenna array. The target antenna array can then determine the corresponding antenna element, i.e., the target antenna element, based on the antenna selection signal. This completes the switching operation between different antenna arrays in the entire UWB radar system.

[0080] According to the antenna array switching method disclosed in this embodiment, when the UWB radar chip triggers an antenna switching command, it first sends an antenna switching command to the signal control module, so that the signal control module generates an antenna switching control signal according to the antenna switching command; then, the signal control module transmits the antenna switching control signal to the delay control module, so that the delay control module generates delay control parameters according to the antenna switching control signal; wherein, the delay control parameters are used to control the switching state of the target switching module, and the target switching module is at least one of all switching modules; then, the delay control module transmits the delay control parameters to the target switching module, so that the target switching module generates an antenna selection signal according to the switching state corresponding to the delay control parameters; finally, the target switching module sends the antenna selection signal to the target antenna array, so that the target antenna array selects the target antenna element according to the antenna selection signal to complete the switching operation between different antenna arrays; wherein, the target antenna array is an antenna array that is electrically connected to any switching module, and the antenna array includes multiple antenna elements. Therefore, by transmitting the antenna switching control signal, the switching switch, under the coordination of the delay control module, can achieve fast and flexible antenna switching, thereby improving the performance of the UWB radar system.

[0081] To further discuss the above Figure 3 For a detailed description of the antenna array switching method shown, please refer to [link / reference]. Figure 4 , Figure 4 This is a flowchart illustrating another antenna array switching method disclosed in an embodiment of this application. It includes steps 401-409.

[0082] 401. Determine the signal processing time corresponding to the radio frequency received signal in the UWB radar chip.

[0083] It is easy to understand that steps 401-402 correspond to step 403 in this embodiment. This embodiment does not restrict the order in which steps 401-402 and step 403 are executed, and will not elaborate on this further.

[0084] Specifically, in this embodiment, the signal processing time corresponding to the radio frequency received signal in the UWB radar chip is determined.

[0085] In one specific embodiment, the signal processing time of the radio frequency received signal RX in a UWB radar system generally falls within a certain range (including delay). In this embodiment, the RX processing time (received signal processing time) is determined to be 850μs + 64 × 1 × 5μs = 1170μs. It is easy to understand that 850μs is the signal processing time of the UWB radar chip, and 64 × 1 × 5μs is the symbol transmission time, where the coefficient 64 indicates the signal format is 8 bits (8 bytes). Therefore, in this embodiment, the received signal processing time is 1170μs.

[0086] 402. Set the burst count value for the antenna burst and determine the antenna processing time of the UWB radar chip corresponding to the antenna burst count, so as to determine the antenna switching cycle based on the received signal processing time and the antenna processing time.

[0087] Based on step 401, to prevent signal transmission errors or slow processing at the receiving end during antenna switching, the number of antenna bursts can be set. Simultaneously, the antenna processing time of the UWB radar chip corresponding to the number of antenna bursts is determined, thereby determining the antenna switching cycle based on the received signal processing time and the antenna processing time. It is easy to understand that the antenna processing time includes the radar frame interval and the burst delay value; the number of bursts is related to the antenna elements of the antenna array; and the time interval between any antenna burst is the burst delay value.

[0088] In one specific embodiment, for ease of understanding, please refer to [link to relevant documentation]. Figure 5 , Figure 5 This is a radar frame timing diagram of a UWB radar chip disclosed in an embodiment of this application. Figure 5It is known that the frame interval FRAME_INTERVAL = 10ms (Radar Frames) and the burst delay value BURST_DELAY = 10ms. SYNC_OUT1 performs array selection, and SYNC_OUT2 triggers antenna switching within the array. Given that the RX processing time is 1170μs, the burst count BURST_CNT is set to 3. Every 3 BURSTs + RX processing times out, an interrupt is triggered by SYNC_OUT1 to the signal control module (CPLD) for array antenna selection. Within each burst, when the last FRAME_CNT + RX processing time times out, an interrupt is triggered by SYNC_OUT2 to the CPLD. It is easy to understand that when BURST_CNT = 3, SYNC_OUT1 is triggered, performing an antenna array selection and switching between Tx or RF1 / RF2 / RF3. When FRAME_CNT = 5 + Rx processing times out, SYNC_OUT2 is triggered, performing an antenna path switching to select RF1, RF2, or RF3 for the RX. Since the control signal is transmitted from the UWB radar chip to the signal control module CPLD, after an interrupt is reported to the CPLD, the decoder (delay control module) and the switching module are controlled according to the CPLD programming. Furthermore, the timeout of the last FRAME_CNT+RX processing time in each BURST is used to describe the timeout of 3×5Frames (3 groups of radar pulses, each group with 5 radar frames) + 3×BURST Delay. Frame_CNT = 5 can be considered as a radar pulse.

[0089] 403. Receive time calibration commands sent by the power supply module and crystal oscillator module, and control the UWB radar chip to trigger a time synchronization signal according to the time calibration commands, so as to control the UWB radar chip, signal control module, delay control module and switch module to achieve time synchronization according to the time synchronization signal.

[0090] Before antenna switching, it is also necessary to ensure the time synchronization of all circuit modules in the UWB radar system. Specifically, the system receives time calibration commands from the power supply module and crystal oscillator module, and controls the UWB radar chip to trigger a time synchronization signal based on the time calibration commands. This time synchronization signal is then used to control the UWB radar chip, signal control module, delay control module, and switching module to achieve time synchronization.

[0091] In one specific embodiment, the power supply module and the external crystal oscillator module can send time calibration commands to the UWB radar chip. The UWB radar chip can then trigger a time synchronization signal according to the time calibration command, and send the corresponding time synchronization signal to the signal control module (CPLD), delay control module, or switch module through the SYNC_OUT output port of the UWB radar chip, thereby achieving time synchronization between the various modules.

[0092] 404. Based on the radio frequency signal connection to the UWB radar chip and all switching modules, when the UWB radar chip triggers the array selection command, and the triggering of the array selection command is after the antenna switching cycle, the antenna switching command is received and sent to the UWB radar chip.

[0093] Depend on Figure 1 and Figure 2 As described, the UWB radar chip and all switching modules can also be connected based on radio frequency (RF) signals. Therefore, when the UWB radar chip triggers an array selection command, and this trigger occurs after the antenna switching cycle, the system receives the antenna switching command and sends it back to the UWB radar chip. It's easy to understand that the RF signal includes both transmitted and received RF signals, and the interval between the transmitted and received signals is one antenna switching cycle.

[0094] In one specific embodiment, corresponding to Figure 3 In step 301, the UWB radar chip is also connected to the RF paths of each switching module via RF signals RX and TX. Therefore, when the UWB radar chip triggers an array selection command, it can transmit the corresponding signal to the antenna array, thereby selecting the corresponding antenna array (this could be the first antenna array selection by the UWB radar system). Thus, after the command is transmitted during the antenna switching cycle, the UWB radar chip can also receive antenna switching commands. Simultaneously, the UWB radar system can send control signals corresponding to the antenna switching commands to the switching modules via the RF paths. In other words, the selection of the antenna array by the switching modules is controlled by the control signals from the UWB radar chip and the delay control module.

[0095] 405. When the UWB radar chip triggers the antenna switching command, it sends the antenna switching command to the signal control module so that the signal control module can generate an antenna switching control signal according to the antenna switching command.

[0096] 406. The control signal control module transmits the antenna switching control signal to the delay control module, so that the delay control module generates delay control parameters based on the antenna switching control signal.

[0097] In this embodiment, steps 405-406 are the same as those described above. Figure 3 Steps 301-302 are similar and will not be elaborated here.

[0098] 407. Set the decoding parameter code for the delay control parameters, and control the delay control module to select the target switch module according to the decoding parameter code.

[0099] It is not difficult to understand that, combined Figure 2 It is understood that the switching module includes a first switching module and a second switching module (and may also include a third switching module), and the antenna array includes a first group of antenna arrays corresponding to the first switching module and a second group of antenna arrays corresponding to the second switching module (and may also include a third group of antenna arrays corresponding to the third switching module). Figure 2 (Not shown), any antenna array includes at least a first antenna element, a second antenna element, and a third antenna element. Furthermore, TX1 of antenna array 1 or TX2 of antenna array 2 can be understood as the transmitting end of the antenna array's radio frequency transmission.

[0100] Therefore, by setting the decoding parameter code of the delay control parameters, the delay control module can select the target switch module based on the decoding parameter code. It is easy to understand that the high two bits of the decoding parameter code represent the selection parameter code corresponding to the first or second switch module, while the low two bits represent the control parameter code corresponding to the first, second, or third antenna unit.

[0101] In one specific embodiment, the delay control unit can generate corresponding delay control logic based on delay control parameters. In this embodiment, the structure of the decoding parameter code can be set. The high two bits of the decoding parameter code can be set to the selection parameter code corresponding to the switch module (specifically, it can be understood as selecting switch module 1 or switch module 2, thereby determining the corresponding antenna array 1 and antenna array 2), and the low two bits can be set to the antenna elements (first antenna element, second antenna element, and third antenna element) in the antenna array. It is easy to understand that in switch module 1, the first antenna element, second antenna element, and third antenna element are RX11, RX12, and RX13, respectively. In switch module 2, the first antenna element, second antenna element, and third antenna element are RX21, RX22, and RX23, respectively.

[0102] 408. The delay control module selects the target antenna unit according to the decoding parameter code, and determines the switching state of the target switching module according to the selection parameter code.

[0103] Therefore, based on step 407, the delay control module can be controlled to select the target antenna element according to the decoding parameter code, thereby determining the switching state of the target switch module according to the selection parameter code. It is easy to understand that the target antenna element corresponds to the lower two bits of the control parameter code in the decoding parameter code.

[0104] In one specific embodiment, the delay control module can determine the antenna unit to be turned on, i.e. the target antenna unit, based on the decoding parameter code. Then, based on the lower two bits of the decoding parameter code, i.e. the selection parameter code, the module sets the switch state of the corresponding target switch module to the on state. Thus, the radio frequency path between the target switch module and the corresponding antenna array is determined to be in the conducting state.

[0105] Therefore, for the switching states of different switching modules, refer to steps 4081-4084. It is easy to understand that steps 4081-4084 are parallel and implementable steps. That is, in this embodiment, only one of the solutions can be implemented in steps 4084-4084.

[0106] 4081. If the target antenna unit is a vertical antenna unit, set the output level of the second serial output port of the delay control module to a high level and the output level of the other serial output ports to a low level; activate the switch state of the corresponding second control pin in the switch module.

[0107] Corresponding to step 408, when the target antenna element is a vertical antenna element, the output level of the second serial output port of the delay control module can be set to a high level, and the output levels of the other serial output ports can be set to a low level; simultaneously, the switching state corresponding to the second control pin (V2) in the switching module is activated. It is easy to understand that the antenna selection signal selects either the second or third antenna element of any switching module.

[0108] In one specific embodiment, when a vertical antenna needs to be selected, the output Q1 of the delay control module is set to a high level, while the rest (Q0-Q7 excluding Q1) are set to a low level, activating switch V2. Therefore, in this embodiment, if the target antenna array to be activated is antenna array 1, the second and third antenna elements are RX12 and RX13 respectively; if the target antenna array to be activated is antenna array 2, the second and third antenna elements are RX22 and RX23 respectively.

[0109] 4082. If the target antenna element is a horizontal antenna element, set the output level of the first serial output port of the delay control module to a high level and the output level of the other serial output ports to a low level; activate the switch state of the switch module corresponding to the first control pin.

[0110] Corresponding to step 408, when the target antenna element is a horizontal antenna element, the output level of the first serial output port of the delay control module can be set to a high level, and the output levels of the other serial output ports can be set to a low level; simultaneously, the switching state corresponding to the first control pin (V1) in the switching module is activated. It is easy to understand that the antenna selection signal selects either the first antenna element or the second antenna element of any switching module.

[0111] In one specific embodiment, when a horizontal antenna needs to be selected, the output Q0 of the delay control module is set to a high level, while the others (Q1-Q7) are set to a low level, activating the V1 switch. Therefore, in this embodiment, if the target antenna array to be activated is antenna array 1, the first antenna element and the second antenna element correspond to RX11 and RX12; if the target antenna array to be activated is antenna array 2, the first antenna element and the second antenna element correspond to RX21 and RX22.

[0112] 4083. If the target antenna element is all the antenna elements in at least two antenna arrays, set the output levels of the first serial output port, the second serial output port, the third serial output port and the fourth serial output port of the delay control module to high level, and the output levels of the remaining serial output ports to low level; activate the switch states of all switch modules corresponding to the first control pin and the second control pin.

[0113] Corresponding to step 408, when the target antenna element is all the antenna elements in at least two antenna arrays, the output levels of the first serial output port (Q0), second serial output port (Q1), third serial output port (Q2), and fourth serial output port (Q3) of the delay control module can be set to high level, while the output levels of the remaining serial output ports (Q4-Q7) are set to low level; simultaneously, the switching states corresponding to the first control pin (V1) and the second control pin (V2) in all switching modules are activated. It is easy to understand that the first and second serial output ports correspond to the first antenna array, and the third and fourth serial output ports correspond to the second antenna array.

[0114] In one specific embodiment, if it is necessary to control the four-element antennas of two antenna arrays (antenna array 1 and antenna array 2), Q0 / Q1 sets the high-frequency switch (V1, V2) of antenna array 1, and Q2 / Q3 sets the high-frequency switch (V1, V2) of antenna array 2.

[0115] 4084. If the UWB radar system also includes a third antenna array, and the target antenna element is all the antenna elements in at least three antenna arrays, set the output levels of the first, second, third, fourth, fifth, and sixth serial output ports of the delay control module to high level, and the output levels of the remaining serial output ports to low level; activate the switch states of all switch modules corresponding to the first and second control pins.

[0116] Corresponding to step 408, when the UWB radar system also includes a third antenna array, and the target antenna element is all the antenna elements in at least three antenna arrays, the output levels of the first serial output port (Q0), the second serial output port (Q1), the third serial output port (Q2), the fourth serial output port (Q3), the fifth serial output port (Q4), and the sixth serial output port (Q5) of the delay control module can be set to high level, and the output levels of the remaining serial output ports (Q6 and Q7) can be set to low level; at the same time, the switching states corresponding to the first control pin (V1) and the second control pin (V2) in all switching modules are activated.

[0117] In one specific embodiment, if it is necessary to control the four-element antenna of the three antenna arrays, Q0 / Q1 sets the high-frequency switch (V1, V2) of antenna array 1, Q2 / Q3 sets the high-frequency switch (V1, V2) of antenna array 2, and Q4 / Q5 sets the high-frequency switch (V1, V2) of antenna array 3.

[0118] It is easy to understand that for steps 2081-2084, in this embodiment, the delay control module is a module with three 8-bit decoder functions, and the switch module is a 1R3T switch with two PIN control pins to control the selection of specific RF1, RF2, and RF3. The two high-order bits are for selection, and the two low-order bits are for control. For example, the switch's activation logic can be found in Table 1.

[0119]

[0120] Therefore, when the decoder outputs

[0121] 0x0010,

[0122] 0x0001,

[0123] 0x0011 indicates that antenna array 1 is being controlled.

[0124] When the decoder outputs

[0125] 0x1000,

[0126] 0x0100,

[0127] 0x1100 controls antenna array 2.

[0128] Furthermore, because the decoder can output 3 bytes, with the high 4 bits forming an antenna array and the low 4 bits forming another antenna array, it can also support a third or fourth array, utilizing the unused 8 bits to control the switch. For example: 0x0110, 0x1001, 0x0101, or 0x1010. Thus, the switch enables reception in both horizontal and vertical directions. Simultaneously, it can also support 3D data effects.

[0129] 409. The target switch module sends the antenna selection signal to the target antenna array so that the target antenna array selects the target antenna element according to the antenna selection signal, thereby completing the switching operation between different antenna arrays.

[0130] Therefore, based on the above steps 408 (including steps 4081-4084) and the antenna switching signal sent by the UWB radar chip in step 404, the antenna selection signal can be sent to the target antenna array by controlling the target switch module, so that the target antenna array selects the target antenna element according to the antenna selection signal and finally completes the switching operation between different antenna arrays.

[0131] In one specific embodiment, based on the parameter code sent by the decoder in step 408 (including steps 4081-4082), the antenna unit of the current target switch module can be turned on after the target switch module is selected, so that the corresponding antenna unit can receive or send signals, thereby completing the switching operation between different antenna arrays.

[0132] Specifically, for steps 4081-4084, by designing the aforementioned UWB array antenna system based on CPLD control, 270° coverage can be achieved, and measurements can be performed in both horizontal and vertical directions within every 180° interval (90° per element). The UWB radar system uses a CPLD as its control core, and selects and switches antenna elements through a delay control unit and a high-frequency switching matrix, ensuring the system's high efficiency, flexibility, and reliability.

[0133] The antenna array switching method disclosed in this embodiment achieves efficient switching, while also being highly programmable, stable, and widely applicable. Specifically, CPLD control is employed to achieve fast and flexible antenna switching, significantly improving the operating efficiency of the UWB radar system. The programmability of the CPLD allows for flexible and adaptable switching strategies, which can be adjusted according to actual needs. A delay control unit ensures signal stability during antenna switching. Furthermore, it can be widely applied to various UWB radar systems requiring rapid antenna switching, such as imaging radar, communication radar, and sensing radar.

[0134] It should be understood that although the steps in the flowcharts of the embodiments described above are shown sequentially according to the arrows, these steps are not necessarily executed in the order indicated by the arrows. Unless explicitly stated herein, there is no strict order restriction on the execution of these steps, and they can be executed in other orders. Moreover, at least some steps in the flowcharts of the embodiments described above may include multiple steps or multiple stages. These steps or stages are not necessarily completed at the same time, but can be executed at different times. The execution order of these steps or stages is not necessarily sequential, but can be performed alternately or in turn with other steps or at least some of the steps or stages of other steps.

[0135] Please refer to the following: Figure 6 The schematic diagram of a switching device for an antenna array disclosed in this application includes:

[0136] Central processing unit 601, memory 605, input / output interface 604, wired or wireless network interface 603, and power supply 602;

[0137] Memory 605 is either a short-term storage memory or a persistent storage memory;

[0138] The central processing unit 601 is configured to communicate with the memory 605 and execute instructions stored in the memory 605 to perform the aforementioned operations. Figure 3 and Figure 4 The antenna array switching method in the illustrated embodiment.

[0139] This application also provides a chip system, characterized in that the chip system includes at least one processor and a communication interface, the communication interface and the at least one processor are interconnected via a circuit, and the at least one processor is used to run computer programs or instructions to perform the aforementioned... Figure 3 and Figure 4 The antenna array switching method in the illustrated embodiment.

[0140] This application also provides a computer-readable storage medium, which includes instructions that, when executed on a computer, cause the computer to perform the aforementioned actions. Figure 1 The antenna array switching method in the illustrated embodiment.

[0141] This application also provides a computer program product containing instructions, which, when run on a computer, causes the computer to perform the aforementioned... Figure 3 and Figure 4 The antenna array switching method in the illustrated embodiment.

[0142] Those skilled in the art will clearly understand that, for the sake of convenience and brevity, the specific working processes of the systems, devices, and units described above can be referred to the corresponding processes in the foregoing method embodiments, and will not be repeated here.

[0143] In the several embodiments provided in this application, it should be understood that the disclosed systems, apparatuses, and methods can be implemented in other ways. For example, the apparatus embodiments described above are merely illustrative; for instance, the division of units is only a logical functional division, and in actual implementation, there may be other division methods. For example, multiple units or components may be combined or integrated into another system, or some features may be ignored or not executed. Furthermore, the coupling or direct coupling or communication connection shown or discussed may be an indirect coupling or communication connection between apparatuses or units through some interfaces, and may be electrical, mechanical, or other forms.

[0144] The units described as separate components may or may not be physically separate. The components shown as units may or may not be physical units; that is, they may be located in one place or distributed across multiple network units. Some or all of the units can be selected to achieve the purpose of this embodiment according to actual needs.

[0145] Furthermore, the functional units in the various embodiments of this application can be integrated into one processing unit, or each unit can exist physically separately, or two or more units can be integrated into one unit. The integrated unit can be implemented in hardware or as a software functional unit.

[0146] If the integrated unit is implemented as a software functional unit and sold or used as an independent product, it can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of this application, in essence, or the part that contributes to the prior art, or all or part of the technical solution, can be embodied in the form of a software product. This computer software product is stored in a storage medium and includes several instructions to cause a computer device (which may be a personal computer, server, or network device, etc.) to execute all or part of the steps of the methods described in the various embodiments of this application. The aforementioned storage medium includes various media capable of storing program code, such as USB flash drives, portable hard drives, read-only memory (ROM), random access memory (RAM), magnetic disks, or optical disks.

Claims

1. A method for switching an antenna array, characterized in that, The method is applied to an ultra-wideband (UWB) radar system, the UWB radar system comprising a circuit-connected UWB radar chip, a signal control module, a delay control module, at least two switching modules, and at least two antenna arrays corresponding to the switching modules respectively. When the UWB radar chip triggers an antenna switching command, it sends the antenna switching command to the signal control module, so that the signal control module generates an antenna switching control signal according to the antenna switching command. The signal control module transmits the antenna switching control signal to the delay control module, so that the delay control module generates delay control parameters based on the antenna switching control signal; wherein, the delay control parameters are used to control the switching state of the target switching module, and the target switching module is at least one of all switching modules; The delay control module is controlled to transmit the delay control parameters to the target switch module, so that the target switch module generates an antenna selection signal according to the switch state corresponding to the delay control parameters; The target switch module is controlled to send the antenna selection signal to the target antenna array, so that the target antenna array selects the target antenna element according to the antenna selection signal to complete the switching operation between different antenna arrays; wherein, the target antenna array is an antenna array that is electrically connected to any switch module, and the antenna array includes multiple antenna elements; If the switching module includes a first switching module and a second switching module, and the antenna array includes a first group of antenna arrays corresponding to the first switching module and a second group of antenna arrays corresponding to the second switching module, wherein each group of antenna arrays includes at least a first antenna element, a second antenna element, and a third antenna element, the step of generating an antenna selection signal based on the switching state corresponding to the delay control parameter includes: The decoding parameter code for setting the delay control parameters; wherein, the high two bits of the decoding parameter code are used to represent the selection parameter code corresponding to the first switch module or the second switch module, and the low two bits of the decoding parameter code are used to represent the control parameter code corresponding to the first antenna unit, the second antenna unit or the third antenna unit; The delay control module selects the target switch module according to the decoding parameter code; wherein, the target switch module is the selection parameter code corresponding to the two highest bits of the decoding parameter code; The delay control module selects the target antenna unit according to the decoding parameter code; wherein the target antenna unit is the control parameter code corresponding to the lower two bits of the decoding parameter code; The switching state of the target switch module is determined according to the selection parameter code; the antenna selection signal corresponding to the switching state is determined according to the control parameter code.

2. The antenna array switching method according to claim 1, characterized in that, Before sending the antenna switching command to the signal control module, the method further includes: The UWB radar chip and all switching modules are connected based on radio frequency signals; wherein, the radio frequency signals include radio frequency transmission signals and radio frequency reception signals, and the interval between the radio frequency transmission signals and the radio frequency reception signals is one antenna switching cycle; When the UWB radar chip triggers the array selection command, and the array selection command is triggered after the antenna switching cycle, the antenna switching command is received and sent to the UWB radar chip.

3. The antenna array switching method according to claim 2, characterized in that, The method further includes: Determine the received signal processing time in the UWB radar chip corresponding to the radio frequency received signal; Set the burst count value for the antenna burst and determine the antenna processing time of the UWB radar chip corresponding to the burst count; wherein, the antenna processing time includes the frame interval of the radar frame and the burst delay value, the burst count value is related to the antenna elements of the antenna array, and the time interval of any antenna burst is the burst delay value. The antenna switching cycle is determined based on the received signal processing time and the antenna processing time.

4. The antenna array switching method according to claim 1, characterized in that, The UWB radar system is connected to the power supply module and crystal oscillator module circuit. Before sending the antenna switching command to the signal control module, the method further includes: Receive time calibration commands sent by the power module and the crystal oscillator module; The time calibration command controls the UWB radar chip to trigger a time synchronization signal, thereby controlling the UWB radar chip, the signal control module, the delay control module, and the switch module to achieve time synchronization.

5. The antenna array switching method according to claim 1, characterized in that, The serial output port of the delay control module includes a first serial output port to an eighth serial output port, and the switching module includes a first control pin and a second control pin. The first control pin and the second control pin are associated with the antenna selection signal. If the target antenna unit is a horizontal antenna unit, the output level of the first serial output port of the delay control module is set to a high level, and the output level of the other serial output ports is set to a low level; the switch state corresponding to the first control pin in the switch module is activated; wherein, the antenna selection signal is to select the first antenna unit and the second antenna unit of any switch module; If the target antenna unit is a vertical antenna unit, set the output level of the second serial output port of the delay control module to a high level, and the output level of the other serial output ports to a low level; activate the switch state corresponding to the second control pin in the switch module; wherein, the antenna selection signal is to select the second antenna unit and the third antenna unit of any switch module.

6. The antenna array switching method according to claim 5, characterized in that, If the target antenna element is all the antenna elements in at least two antenna arrays, set the output levels of the first serial output port, second serial output port, third serial output port, and fourth serial output port of the delay control module to high level, and the output levels of the remaining serial output ports to low level; activate the switch states of all the switch modules corresponding to the first control pin and the second control pin; wherein, the first serial output port and the second serial output port correspond to the first antenna array, and the third serial output port and the fourth serial output port correspond to the second antenna array; If the UWB radar system further includes a third antenna array, and the target antenna element is all the antenna elements in at least three antenna arrays, the output levels of the first, second, third, fourth, fifth, and sixth serial output ports of the delay control module are set to high level, and the output levels of the remaining serial output ports are set to low level; the switching states corresponding to the first and second control pins in all the switching modules are activated; wherein, the first and second serial output ports correspond to the first antenna array, the third and fourth serial output ports correspond to the second antenna array, and the fifth and sixth serial output ports correspond to the third antenna array.

7. An ultra-wideband (UWB) radar system, characterized in that, include: The circuit includes a UWB radar chip, a signal control module, a delay control module, at least two switch modules, and at least two antenna arrays corresponding to the switch modules. The output terminal of the UWB radar chip is connected to the input terminal of the signal control module, and is used to trigger an antenna switching command and send the antenna switching command to the signal control module; wherein, the antenna switching command is used to switch any antenna array; The output terminal of the signal control module is connected to the input terminal of the delay control module, and is used to generate an antenna switching control signal according to the antenna switching command, and transmit the antenna switching control signal to the delay control module. The output of the delay control module is connected to the input of at least two switch modules, and is used to generate delay control parameters according to the antenna switching command, and transmit the delay control parameters to the target switch module; wherein, the delay control parameters are used to control the switching state of the target switch module, and the target switch module is at least one of all switch modules; If the switching module includes a first switching module and a second switching module, and the antenna array includes a first group of antenna arrays corresponding to the first switching module and a second group of antenna arrays corresponding to the second switching module, wherein each group of antenna arrays includes at least a first antenna element, a second antenna element, and a third antenna element, then the delay control module is specifically used for: setting the decoding parameter code of the delay control parameters; wherein the high two bits of the decoding parameter code are used to characterize the selection parameter code corresponding to the first switching module or the second switching module, and the low two bits of the decoding parameter code are used to characterize the control parameter code corresponding to the first antenna element, the second antenna element, or the third antenna element; controlling the delay control module to select the target switching module according to the decoding parameter code; wherein the target switching module is the selection parameter code corresponding to the high two bits of the decoding parameter code; controlling the delay control module to select the target antenna element according to the decoding parameter code; wherein the target antenna element is the control parameter code corresponding to the low two bits of the decoding parameter code; determining the switching state of the target switching module according to the selection parameter code; and determining the antenna selection signal corresponding to the switching state according to the control parameter code. The output terminal of the switch module is connected to the corresponding antenna array, and is used to generate an antenna selection signal according to the switch state corresponding to the delay control parameter, and send the antenna selection signal to the corresponding antenna array; The antenna array includes multiple antenna elements, which are used to activate the corresponding antenna elements according to the antenna selection signal. The UWB radar system is used to perform the antenna array switching method as described in any one of claims 1-6.

8. A switching device for an antenna array, characterized in that, The device includes: Central processing unit, memory, input / output interfaces, wired or wireless network interfaces, and power supply; The memory is either a short-term storage memory or a persistent storage memory; The central processing unit is configured to communicate with the memory and execute instructions in the memory to perform the antenna array switching method according to any one of claims 1 to 6.

9. A computer-readable storage medium, characterized in that, The computer-readable storage medium includes instructions that, when executed on a computer, cause the computer to perform the antenna array switching method as described in any one of claims 1 to 6.

10. A computer program product, characterized in that, The computer program product includes instructions that, when executed on a computer, cause the computer to perform the antenna array switching method as described in any one of claims 1 to 6.

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